drbd: When proxy's buffer drained off go into regular resync mode
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 4713312..da02cce 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -973,7 +973,8 @@
struct drbd_work resync_work,
unplug_work,
go_diskless,
- md_sync_work;
+ md_sync_work,
+ start_resync_work;
struct timer_list resync_timer;
struct timer_list md_sync_timer;
#ifdef DRBD_DEBUG_MD_SYNC
@@ -1546,6 +1547,7 @@
extern int w_e_reissue(struct drbd_conf *, struct drbd_work *, int);
extern int w_restart_disk_io(struct drbd_conf *, struct drbd_work *, int);
extern int w_send_oos(struct drbd_conf *, struct drbd_work *, int);
+extern int w_start_resync(struct drbd_conf *, struct drbd_work *, int);
extern void resync_timer_fn(unsigned long data);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 0dc93f4..f49505c 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2846,6 +2846,7 @@
INIT_LIST_HEAD(&mdev->unplug_work.list);
INIT_LIST_HEAD(&mdev->go_diskless.list);
INIT_LIST_HEAD(&mdev->md_sync_work.list);
+ INIT_LIST_HEAD(&mdev->start_resync_work.list);
INIT_LIST_HEAD(&mdev->bm_io_work.w.list);
mdev->resync_work.cb = w_resync_inactive;
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 04a08e7..ee9238e 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3279,6 +3279,7 @@
wait_event(mdev->misc_wait,
mdev->state.conn == C_WF_SYNC_UUID ||
+ mdev->state.conn == C_BEHIND ||
mdev->state.conn < C_CONNECTED ||
mdev->state.disk < D_NEGOTIATING);
@@ -4338,6 +4339,14 @@
tl_release(mdev, p->barrier, be32_to_cpu(p->set_size));
+ if (mdev->state.conn == C_AHEAD &&
+ atomic_read(&mdev->ap_in_flight) == 0 &&
+ list_empty(&mdev->start_resync_work.list)) {
+ struct drbd_work *w = &mdev->start_resync_work;
+ w->cb = w_start_resync;
+ drbd_queue_work_front(&mdev->data.work, w);
+ }
+
return TRUE;
}
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 6749907..c9e7cb7 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -742,6 +742,14 @@
return 1;
}
+
+int w_start_resync(struct drbd_conf *mdev, struct drbd_work *w, int cancel)
+{
+ drbd_start_resync(mdev, C_SYNC_SOURCE);
+
+ return 1;
+}
+
int w_ov_finished(struct drbd_conf *mdev, struct drbd_work *w, int cancel)
{
kfree(w);
@@ -1472,7 +1480,7 @@
union drbd_state ns;
int r;
- if (mdev->state.conn >= C_SYNC_SOURCE) {
+ if (mdev->state.conn >= C_SYNC_SOURCE && mdev->state.conn < C_AHEAD) {
dev_err(DEV, "Resync already running!\n");
return;
}